The Earth’s Gravity Field to Degree and Order 180 Using SEASAT Altimeter Data, 
Terrestrial Gravity Data, and Other Data

Rapp, R.H.

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The Earth’s Gravity Field to Degree and Order 180 Using SEASAT Altimeter Data, Terrestrial Gravity Data, and Other Data

Rapp, R. (1981): The Earth’s Gravity Field to Degree and Order 180 Using SEASAT Altimeter Data, Terrestrial Gravity Data, and Other Data, (Reports of the Department of Geodetic Science and Surveying ; 322), Columbus, Oh : The Ohio State University, Department of Geodetic Science, 53 p.

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_1834018 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_1834018_3

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Rapp, R.H.^{1, 2}, Author

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1External Organizations, ou_persistent22
2Publikationen aller ICGEM-unterstützten Projekte, Deutsches GeoForschungsZentrum, , , ou_1684888

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Abstract: The spherical harmonic expansion of the earth's gravitational field has been obtained to degree 180 by combining several sources of data. The first data set was an a priori set of potential coefficients to degree 36 based on a number of recent solutions including a substantial of resonance terms. A second data set was a 1 x 1 deg anomaly field derived from the Seasat data set, while the third data set was an updated 1 x 1 deg terrestrial field. The last two fields were combined into one set containing 56761 1 x 1 deg values. The remaining values were computed from the a priori potential coefficients. A rigorous combination solution was not carried out. Instead all anomalies were weighted in such a way that the normal equations were diagonal. The results of the adjustment were 64800 1 x 1 deg anomalies that were expanded into spherical harmonics using the optimum quadrature procedures developed by Colombo. Accuracy estimates for each coefficient were obtained considering noise propagation and sampling error caused by the finite block size in which the anomalies are given. The percentage error of the solution reaches 100% near degree 120. The coefficients and their accuracy to degree 50 are listed in an appendix.

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Dates: Finally published : 1981

Publication Status: Finally published

Pages: 53

Publishing info: Columbus, Oh : The Ohio State University, Department of Geodetic Science

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Identifiers: Other: 711664

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Title: Reports of the Department of Geodetic Science and Surveying

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Pages: - Volume / Issue: 322 Sequence Number: - Start / End Page: - Identifier: Report Nr.: 711664